Battery hand lamp



Sept. 27, 19 H. w. JONES I BATTERY HAND LAMP Filed Dec. 6. 1929 5Sheets-Sheet. 1

W INVENTOR ATTORNEYS.

Sent. 27, 1932. H. w. JONES I BATTERY HAND LAMP' s Sheets-Shet 2 FiledDec. 6. 1929 ATTORNEYS.

Sept. 27, 19 32.

5 Sheets-Sheet q a l. i .3// 08 w I 3 308 2 BY WWW, ATTORNEYS.

lllllllll lm Patented Sept. 27', 1932 UNITED STAT S PATENT? OFFICE HOMERW. J' ONES, OF WILLIAMSVILLE, YORK, ASSIGNOR TO NATIONAL CARBON COMPANY,INC., A CORPORATION OF NEW YORK BATTERY HAND LAM]? Applicationfiled'December 6, 1929. Serial No. 412,188.

My invention relates to battery hand lamps, flashlights and the like,and, more particularly, to an improved lamp head for maintaining a beamof light in any direction it may be positioned.

Battery hand lamps are used in many places where it is desirable toplace the lamp at rest in order to obtain the free use of both handswhile the light is directed upon some desired object. In using handlamps heretofore constructed delay or inconvenience is encountered infinding some means such as a prop or hook to rest the lamp on, ortheuser is otherwise inconvenienced by carrying some specially providedclamp or attachment for supporting the lamp to direct the light on theobject to be illumined. v

Therefore, one of the objects of my invention is to construct a selfsupporting hand lamp adapted to maintain a any direction.

Another and more specific object of my invention is to construct a handlamp adapted to rest on its side or its base end and provided with alight projector rotatably mounted on a lateral axis extending from thehead of the lamp to prevent it from rolling while lying on its side andto provide a means for supporting the projector in any position to whichit may be revolved about its axis while the lamp is resting on its sideor standing on its end.

The objects of my invention will be more clearly understood from thefollowing-description and accompanying drawings, in which Figs. I to IIIare sectional views of different modifications of my invention; Figs. IVand V are views on lines VV in Figs. II and III respectively; Fig. VI isa top end view of the light head; and Figs. VII and VIII are sectionaland end views respectively of the swivel head joint in Fig. I

In Fig. I, a lamp head 1 is mo-untedon a base or battery casing 2 havinga base end 3. The head comprises a stationary tubular elbow 4 coupled tothe battery casing by a screw threaded connection 5 and a second tubularelbow 6 pivotally joined to the stabeam of light in IV-IV and tionaryelbow 4 by a swivel joint 6a on an axis common to their adjacent ends.The end of the stationary elbow adjacent to the pivoted elbow isindented to form a crescent shaped ledge 7 therein. An inwardly formedflange 8 is provided on this end of the elbow at the inner edge ofthe'ledge. A cup-shaped ring 9 having an inwardly turned flange 10secured coaxially to the stationary elbow flange 8 by rivets 11 isprovided with screw threads on its cylindrical Walls 12. I

The end of the pivoted elbow 6 adjacent to the stationary elbow 4 isprovided with an in dented ledge 13 and an inwardly turned flange 14similar to the ledge and the flange of the stationary elbow 4. Athreaded cupshaped ring 15 similar to the previously described ring isprovided with a flange 16 which is secured to the flange 14 by rivets18. The form of the swivel joint 6a shown in Figs. I, VII and VIII isparticularly suitable for the modification of my lamp shown in Fig. I,but this joint also may be used for the other modifications. The jointcomprises two cup-shaped rings 20 which are similar tothe rings 9 and 15and-are provided with screw threads along their cylindrical Wall 21 toengage the corresponding screw threads along the cylindrical walls ofthe rings 9 and 15 secured to the elbows. Each of the joint rings 20 isprovided with an inwardly turned flange or disc 22 which abut each otherand has a circular central opening therein. Flat clamping rings 23 and24 having a central opening registering with the central openings in theabutting flanges 22 of the joint rings 20 are placed on each side of theflanges. Flexible projections 25 extend the inner periphery of theclamping rings in opposite directions through the central openings inthe joint ring flanges 22 and are bent over the opposite clamping ringtowards their outer peripheries. The bend in the projections is soformed as to clamp the flanges 22 of the joint rings 20 between theclamping rings 23 and 24 under-the spring tension of the projections. 25and to hold the joint rings in sliding contact with each other withsuflicient friction to maintain thepivoted elbow 6 at any point to whichit may be laterally from turned. In this form of the swivel joint meansare provided to limit the number of turns of the pivoted elbow 6 aboutits axis in either direction to about two revolutions. The meanscomprises a lug 26 on the outer periphery of the clamping ring23-coopcrating with a stop 27 on one of the joint ring flanges 22 andanother lug 28 on the other clamping ring 24 cooperating with a stop 29on the other joint ring flange 22. As shown in Figs. VII and VIII thestop 27 is on the joint ring secured to the pivoted elbow 6 which hasbeen rotated to its extreme clockwise position. To rotate the elbow 6 toits extreme counter-clockwise position from the position shown the lugsand stops cooperate with each other in the ,following manner. The stop27 will pass around the outer periphery of the clamping ring 23 until itcomes in contact with the edge of the lug 26 facing the clockwisedirection. The stop 27 and the lug 26 may then be rotated together untilthe ed e of the clamp projections on this ring acing a counter-clockwisedirection comes in contact with the edge of the clamp projections 25 onthe other clamping ring 24. The two clamping rings may now be rotatedtogether by the elbow 6 until the edge of the lug 28 facing thecounter-clockwise direction comes in contact with the stop 29 onthe-joint ring 20 fixed to the stationary elbow 4.

A clip 30 is secured to the top of the stationary elbow 4 which may beused to fasten the lamp to apersons vest pocket or other objects whilethe light may be turned and directed upon-the desired object.

In the outer end of the rotatable elbow 6 an incandescent light bulb 31is mounted in a socket 32 secured to an insulating disc 33 by arivet 34.The insulating disc rests on a ledge 35 in the elbow 6 and is maintainedin place by a spring ring 36 in contact with the disc and fitting into agroove in the elbow 6. The end portion of the elbow 6 is threaded toreceive cooperating threads on a lens ring 37. A lens 38 and a reflector39 which fits loosely around the incandescent bulb 31 are mounted as aunit in the lens ring 37 which may be screwed in or out the elbow 6'tofocus the light.

The incandescentlight 31 is in an electrical circuit between theterminals of the battery 40. A portion of one side of the circuit isformed in the usual manner through the battery. casing 2 in contact withthe lower terminal of the battery and a switch 41 on the casing which isadapted to control the connection between the casing 2 and a switchcontact 42 riveted to an insulating disc 43 secured between a shoulderon the stationary elbow 4 and the top of the battery casing 2. Theremaining portion of this side of the circuit comprises a flexiblecovered wire 44 secured at one end to the switch contact 42 and at theother end to the rivet 34 in -means of the usual switch.

contact with the bulb socket 32. The other side of the incandescentlight circuit comprises a center bulb contact 45 secured to theinsultingdisc 33 by a rivet 46, and a flexible covered wire 47 attached at oneend to the rivet 46 and at the other end to a battery terminal contact48 riveted into the insulating disc 43 and making contact with the upperbattery terminal. Sufficient slack is allowed in the wire leads 44 and47 to permit the elbow 6 to be turned through at least two revolutionsor until the elbow is arrested by the swivel joint stops 27 and 29without taking up all of the slack.

The modifications of my invention shown in Figs. II and III are similarto the modification shown in Fig. I except for the electrical circuit inthe lamp head and also except for the form of the swivel joint, onlythese dissimilar parts will be described in detail. The parts of myinvention in Figs. II and III which" correspond to the similar parts inFig. I will be designated by the same reference numerals as in Fig. Iwith the addition of 200 and 300 respectively.

The lamps in Figs. II and III are. constructed so that the pivoted elbowcan be rotated continuously in either direction without injury to theelectrical circuit. Therefore, no means is provided in the swivel jointin connection with these modifications to limit the number of turns ofthe elbow. This joint is the same in both Figures II and III andtherefore will be described only in Fig. II. The joint rin s 220 in Fig.II are similar to those in Fig. T heir abutting flanges 222 are adaptedto slide on one another and are held in frictional contact between aflat ring .223 and a clamping ring 224 by the spring tension of the bentprojections 225 extending from the inner periphery of the clamping ringand over the flat ring 223.

In Fig. II the incandescent bulb 231 is mounted in a socket 232 securedto and below the insulting disc 233. The disc 233 is held in the elbow206 in the same manneras in Fig. I. The incandescent bulb 231 is in acircuit between a battery terminal contact 248, in circuit with oneterminal of the battery, and a switch contact 242 which may be placed incircuit with the other battery terminal by The circuit between the twocontacts 248 and 242 comprises a spring contact post 249 carried by aninsulating plate 243 mounted in the stationary elbow 204 adjacent to thetop of the battery casing 202. The post is secured at one end to theinsulating plate by a rivet 250 which forms the contact 248 for theupper battery terminal. I

The upper end of the post 249 is provided with a socket 251 coaxial withthe common axis of the adjacent ends of the elbows. A tubular conductor252 extending along the common axis of the elbows is received at one endby the socket 251. The other end of the tubular conductor is providedwith a flange 253 which is attached to the pivoted elbow 206 and rotatestherewith. The conductor 252 is insulated from the elbow 206 by aninsulating disc 254 secured by rivets 218 to the inwardly turned flange214 of the elbow 206. The flange 253 of the conductor 252 is fixed tothe disc254 by rivets 255 passing through the flange, the disc and abulb contact-256 on the opposite side of the disc from the flange. Theother bulb contact 257 is secured to the insulating disc 254 by thebeaded end of a conductor rod 258 passing through the center of thetubular conductor 252 and through the insulating disc 254. The oppositeend of the rod 258 extends beyond the end of the tubular conductor 252and passes through an opening in a spring contact post 259 secured tothe insulating disc 243 at the top of the battery casing 202. The footof the post 259 is secured to the disc 243 by the switch contact rivet242-which passes through the disc. The upper end of the post 259 is bentdownwardly in the form of an inverted U. The downwardly bent portion isprovided with a socket 260 to receive the end of the conductor rod 258.

In Fig. III the incandescent bulb 331 is mounted in the elbow 306 in thesame manner that the bulb in Fig. II is mounted. The bulb is in acircuit comprising a spring post 349 secured to an insulating disc 343by a rivet 348 which passes through the foot of the post and the disc.The head of the rivet on the opposite side of the disc from the postforms the contact for engaging the center battery terminal. The upperend of the post 349 engages the rotatable surface of a hollow tubularconductor 352 secured to the pivoted elbow 306 at one end and journalednear the other end in an axial hole in an insulating disc 308a securedto the stationary elbow 304 by rivets 311 passing through the inwardlyturned flange 308 on the elbow. The tubular conductor 352 is providedwith a flange 353 which is secured to the insulating disc 354 by rivets355. One of the rivets 355 also passes through an L shaped bulb contact356 and secures it to the disc in contact with the tubu lar conductor352. The bulb contact passes through a hole 354a in the insulating disc354 and is connected withv the central terminal of the light filament.The other terminal of the light filament is connected with a'springcontact strip 357 secured to the insulating disc 354 by the beaded endof a conductor rod 358 extending through the insulating disc 354.

The rod 358 passes through the tubular conductor 352 and is coaxialtherewith. An insulating bushing 352a fits within the end of the tubularconductor 352 opposite the insulating disc 354. The rod 358 passesthrough a bore 3526 in the. bushing 352a which provides a support forthat end of the rod. The projecting end of the rod 358 head.

The device with its modifications shown and described herein, areillustrative of my invention. Various changes may be made in the detailsof the structure without departing from thescope of my invention definedin the appended claims.

I claim:

1. A hand-lamp, comprising a tubular head and a base, said head having amember fixed to the base, a light projector swiveled on said member aswivel joint between the fixed head mem er and said projector, said ointcomprisin two rings having juxtaposed inwardly anged portions and acylindrical portion, the cylindrical portion of one ring being joined tothe tubular portion of the fixed head member, and the cylindricalportion of the other ring being joined to the projector, a clamping ringin contact with the flange of one joint ring, projections on saidclamping ring extending through a circular. central aperture in each ofthe flanges and bent along the walls of the flanges to hold them infrictional contact.

- 2. A battery hand lamp, comprising the combination of a battery casingand a head, said head comprising an L-shaped tubular member having theend of one arm of the L attached to said casing, a plate secured in saidend, insulated battery terminal contacts anchored in said plate andextending therethrough; a second member rotatably attached to the otherarm of the L, an incandescent light carried in thesecond member, a platesecured in said second member between the light and the first member,insulated contacts anchored in said second plate and extendingtherethrough to the light contacts, and insulated conductors extendingbetween the contacts in the first and second plates.

3. A swivel joint comprising two abutting discs each having a centralopening therein,

a clamping ring having projections thereon turns one disc may makerelative to the other.

4. V A swivel joint comprising two abutting discs each having a centralopening therein,

a clamping ring on each side of said discs, projections on said clampingrings extending in opposite directions throu h said openings and bentoutwardly towar s the outer periphery of the flanges to hold the discsin slidin contact with each other between the clamping rings and theprojections, and

means for limiting the number of turns of said discs relatively to eachother comprising a lug on each clamping ring and a stop on each discprojecting in the arc of travel of the lug on the adjacent ring.

5. 'A hand lamp comprising a tubular head and a base, said head having amember fixed to the base, a light projector supporting member swiveledon said fixed member, a swivel joint between the fixed head member andsaid projector supporting member, said joint comprising two juxtaposeddiscs having a central opening in each, one of said discs being attachedto the fixed head memher and the other disc being attached to theswiveled head member, a clamping ring in contact with one of said discs,and projections .on said clamping ring, said projections extendingthrough the central opening in each of said discs and bent towards theouter periphery of said discs to hold the discs in frictional slidingcontact vwith each other.

6. A hand lamp comprising a tubular head and a base, said head having amember fixed to the base, a light projector supporting member swiveledon said fixed member, a swivel joint between the fixed head member andsaid projector supporting member, said joint comprising two juxtaposeddiscs having a central opening in each, one of said discs being attachedto the fixed head member and the other disc being attached to theswiveled head member, a clamping ring on each side of said disc,projections on said clamping rings,-

said projections extending through the central opening in each of saiddiscs and bent towards the outer periphery of said discs to hold thediscs in frictional sliding contact with each other, and projections onsaid discs cooperating with projections on said clamping rings to limitthe swivel movement of said swivel member.

In testimony whereof, I afiix my signature.

HOMER W. JONES.

